package com.juc.threadPoolExecutor.threadPoolExecutor1;

import java.util.concurrent.SynchronousQueue;
import java.util.concurrent.ThreadPoolExecutor;
import java.util.concurrent.TimeUnit;

public class Run4_2 {

	/**
	 * 数量>maximumPoolSize
	 * 队列使用 SynchronousQueue类
	 * 线程数量>=corePoolSize
	 * 并且线程数量<=maximumPoolSize
	 * 所以keepAliveTime >5时清除空闲线程
	 * 
	 */
	public static void main(String[] args) throws InterruptedException {
		Runnable runnable =new Runnable() {
			
			@Override
			public void run() {
				try {
					System.out.println(Thread.currentThread().getName() + " run! " +System.currentTimeMillis());
					Thread.sleep(1000);
				} catch (InterruptedException e) {
					// TODO Auto-generated catch block
					e.printStackTrace();
				}
			}
		};
		ThreadPoolExecutor executor = new ThreadPoolExecutor(7, 8, 5, TimeUnit.SECONDS, new SynchronousQueue<Runnable>());
		executor.execute(runnable);//1
		executor.execute(runnable);//2
		executor.execute(runnable);//3
		executor.execute(runnable);//4
		executor.execute(runnable);//5
		executor.execute(runnable);//6
		executor.execute(runnable);//7
		executor.execute(runnable);//8
		executor.execute(runnable);//9
		Thread.sleep(300);
		System.out.println("A: " +executor.getCorePoolSize());
		System.out.println("A: " +executor.getPoolSize());
		System.out.println("A: " +executor.getQueue().size());
		Thread.sleep(10000);
		System.out.println("B: " +executor.getCorePoolSize());
	    System.out.println("B: " +executor.getPoolSize());
		System.out.println("B: " +executor.getQueue().size());
   }
}
